3.20.2013

Lawmakers repeatedly asked how much advance warning would be required to deflect a threatening asteroid, and were repeatedly told that it would take years. Shelton said that if time was limited, "probably nuclear energy is what we're talking about." But even a nuclear-armed mission to blast an asteroid, Bruce Willis-style, would require lots of lead time. Rep. Bill Posey, R-Fla., asked Bolden about the strategy for dealing with an Earth-threatening asteroid that was discovered with three weeks' warning. "If it's coming in three weeks ... pray," Bolden said. "The reason I can't do anything in the next three weeks is because for decades we have put it off."